he also reminded the crowd about the now-infamous 47% from mitt romney. speaking of which, mitt romney said that winning a key swing state may be tough. in philadelphia, he said that winning pennsylvania would be a shock to him, but he said he will try. this was only his second visit to the keystone state in the past few months. both candidates will be preparing for next wednesday's debates. an alarmin anthrax. and d.c.'s livinything on its promise to keep trains running to nationals playoff games. >> amtrak conductors mechanics, and engineers have been failing drug and alcohol tests over the last six years. an audit most of the positive results were for cocaine and mari the failure rate was 51% higher than the industry average. following the bickering and a third-party stepping in to solve the problem, the issue of paying to keep metro open for late night playoff games may not be an issue at all. wtop radio did some number crunching and found the number of riders would offset the $30,000 per hour that it costs to run metro. living social has offered to p